Examples

They carry information from one part of the brain to another, as well as back and forth between the brain and the rest of the body by way of the spinal cord and some specialized structures called cranial nerves.

The nerve fiber attached to these organs—specifically called cranial nerve zero because all the other numbers were already taken before it was discovered—responds specifically to scents from potential mates.

The procedure Dr. Michael R. Egnor performed, called a cranial cruciate decompression, involved removing four triangular sections of bone from the top of Bobby's skull, leaving behind a cross-shaped, floating section to protect a large vein and four openings through which the swelling could protrude, alleviating the pressure.

Now, for the first time ever, neurosurgeons from all over the world have congregated to perform a first, a separation of the two heads, the condition known as cranial pegus parasiticus (ph), or parasite twin.